Speed changing transmission



4 Sheets-Sheet 1 Filed Nov. 6, 1948 M "'14/ IIIHHHIII H J J I "n39 36' mil n I INVENTOR N.C. MOORE A 'rfomvsv N. c. MOORE 2,538,625

SPEED CHANGING TRANSMISSION 4 Sheets-Sheet 2 l| m l Jan. 16, 1951 Filed Nov. 6, 1948 I FIG? '//vv/v TOR N. C. MOORE ATTORNEY Jan. 16, 1951 N. c. MOORE SPEED CHANGING TRANSMISSION Filed Nov 6, 1948 4 Sheets-Sheet 3 lNl ENTOR N. C.MO ORE A T7I'ORNEY Jan. 16, 1951 N. c. MOORE 2,533,525

SPEED CHANGING TRANSMISSION Filed Nov. 6, 1948 4 Sheets-Sheet 4 A T TORNEV Patented Jan. 16, 1951 amino STATE 5 PATENT QFFI CE 25312625 sense CHANGING 'rnansmssrons Norman. 01 M'oore,. Greenfield, Mass, assignor to Western Electric Company, Incorporated, New- Ycrk,,Ni E, a corporation. of New'York Application November 6, 1 948,, fieriaLNo. 58,753:

This invention relates to. speed changing; trans".- I

missions and. has. for its object, theprovision of a. speed changing. transmission which is compact form and readily operable. to. convert. a. given input. speed. to any one. of. a multiplicity. of difv ferent. output. speeds.

Speed change transmissions have. been. found desirable for. use in. the art. of winding coils. for communication. systemsl. In the. communication arts, coils oi various. types are employed and one of the. variations lying namely in. the sizes; of

the wires employed in the constructionof these- Coil. winding. machines have. been progiven speeds. to

coils. .vid'ed with arbors rotating. at.

wind; coils: thereon. These. machines also include distributing. arms. for each wire. being wound into a coil on the arbor,.it being required in.- most instances that. the convolutionsof. the wires forming; the coils be positioned closely adjacent each other. Therefore, whenthereare. variations .5111. the; sizes oi. the wires forming, the coils, it is apparent. that theremust. be fine variations in the driving. means for; the. distributor arms to accurately lay the. convolutions of the wires closely adjacent each. other onthe mandrel.

Heretofore. these adjustments. for the. various gages ofwire-have required. considerable. time in setting up. each machine whenever wiresof ditferent. sizes. were. to be wound. into coils thereon.

With. the aforementioned; object in view, the invention. comprises. a speed changing; transmissienti'ncluding aninputshaf-t rotatableat. a given speed, an. output. shaft. rotatable. at. predetermined variable speeds from the given. speed; of the input shaft, a trainof. gears driven by the inputshaftatzsuccessively varying rates of speeds from. the. given. speed. of. the input. shaft. connectl' f units. for the. gears. in; the train ofi. gears to singI-y form operative connections. thereof with the output shaft, and. means to. selectively move 2 anyone of the connecting units into. operative connection with its respective gear the; train of gears Specifically. the transmission includes: a. selector in the form of a drum having recesses. disposed. at variable. positions about. its peripheryand. throughout its length to singliv receive projections of connecting, units. disposed. in groups upon both sides of the selector. and thegear and pinion. units. The connecting units are divided.-

groups' and mounted upon parallel shafts haying beveled gears on' like ends thereof interengagi'ng beveled gears on the output shaft whereby the driving. or either of the. parallel I shafts of the connecting units will drive;

the.

2 put-shaft at.- a. given speed. depending. upon. which connecting; unit,- is. moved into operating. position, connecting. its respective. gear and. pinion unit. to the. output. shaft. Springs. are provided to normally urge the connecting units. into operatiive engagement with. their respective. gears. or the gear. and pinion units, but. are held. out of engagementby the selector which. allows. operative movement. of only one connecting. unit at a time. The selector.- i's. rotatable. by a hand crank in any one of: the operating. positions determined. by a pointer" movable. with. the crank relative. to a. dial.

Other objects. and advantages will be apparent from. the. following. detailed description. when considered. in conjunction with; the accompanying. drawings. wherein V p Fig 1v is. a. vertical sectional view of the. trans.- mission Fig. 2 is a. horizontal. sectional view taken. sub-- stantially along the. line 2--Z.-of. Fig.1; Fig.v 3 is ahorizontal. sectional view talienalong the line: 3-3. of. Fig. 1;,

.Fig. 4. is another vertical. sectional View taken substantially along the line 4-4 of Fig. 1;..

Fig. 5 is a. fragmentar sectional. view illustrating. the selector; and.

sion includes a housing. I ll; having. its open upper end closed. by a cover H and apertures I2- and M. in the. s des. thereofi' to. receive. sealing. units 1 ['5' and. l5 through. which an input shaft. [1." and.

an output shaft [8' respectively extend. Thainput; shaft" IT is. driven at a gi'lven. constant speed by suitahle meanssuch. as. a belt and pulley corinection [9. with a. power source. (not shown)'.'. The input shaft is j'ournall'ed in bearings 20 mounted. Within. the: housing I01 and has a worm 21., interposed between. the. bearings, fixedly .mounted thereon- Awormgear 22; inter'engaging the worm: 2| and driven, thereby is fixedly mounted; on. one end. of. a rotatable shaft 23" suitably journalled in bearings 24'- and 25* of parallel frame-members; 26 and 2 1 suitably mountedin thehousing. (0 AI fixed position: shaft. 30 has: its end'sdispose'd in. apertures in the frame members- 25 and; 21. with its. axis- 9' B6 61. withi axis of. theihrotatahle. shaft. 23. v n

' A. plurality of gearand. pinion units 31 -to.- 43, inclusive, are mounted for free-- rotation: on the shafts 2 3 and 30,. the units 32*, 34,-. 36;. 38,. 4a. and 4} upon the: rotatable: shaft, 24!.

upper end there'off at a' fixed position" pinned or otherwise fixed to the rotatable shaft 23 and interengages thegear 44 of the first unit 3|. Therefore, during rotation of the rotatable shaft 23, the pinion 48 will drive the first unit 3| by rotating its gear 44 causing its pinion to rotate the second unit 32 at a lower speed while the second unit 32 through the connection of its pinion with the gear of therthird unit 33 will rotate the third unit at a'still lower speed and so on throughout the train of gears or units 3| to 43, inclusive. The last unit 43 has its pinion V 45 interengaging a single unit or gear 50. i

The output shaft is is journalled in bearings" 52 r and has beveled gears 53 and 54 mounted thereon upon opposite sides of the bearings 52. The bev-.

eled gears 53 "and 54" respectively interengage beveled'gears 55 and 55 of parallel shafts 51 and 58 which are journalled in suitable bearings in the parallel frames 2 6 and 27. The shafts 51 and 58 support connecting units, one for each gear of the units 3| to 43, inclusive, and the unit or gear 50. In the present embodiment of the invention, there are fourteen units providing fourteen var; iations in the speed of rotation of the output shaft is from the given'speed of the input shaft H. The connecting units may be identified by reference numerals 6| to 74, inclusive, corresponding, to the gear and pinion units 3| to 43, inclusive, and gear .50. The connecting units are -each provided with a gear 16 mounted upon its respective shaft 5? or 58 and having an annular portion Tl (Fig. 4) positioned in'an aperture 18 of its leverlike member 19 to pivotally support this member for movement about the axis of its shaft. An idler gear 80 of each connecting unit, interengages its gear l6 and is ppsifioned to be mavedinto engagement with its respective gear 44 of the gear and pinion units. Spacers 8| are carried by the outer ends of theleverlike members-T9,- the lowermost spacer in Fig.f4 engaging the horizontalmember 2| and the succeeding spacing members engaging their adjacent lever- "like members as illustrated in Fig. 4. The free 91 .33. Q i v lik me b r 79am pointed :a'sillustrated inFig .3 to be received in their respectiye notches 85 of a selector 88. Q

The selector 86 is composed. of a plurality of annular elements 81 equal in number to the connecting units 6| to, inclusive, and having their jrecesse 8 5 disp osed in an out-of-aligned arra'ngement, preferably in. a substantially spiral path aboutthe periphery of the selector whereby onlyoneconnecting unit may be allowed to move into operative engagement with the driving means at on e time. The elements 8'! are centrally apertured to receive a crank shaft 90 Slots 9| are provided in the elements whereby the may be keyed to the crank shaft and" aligned apertures 92 are formed therein to receive a pin 93 whereby 'theifecesses 85 of the elements 8'! will be positioned accurately with respect to each other.

The crank shaft sflis journalled in suitable bearings 35 in the horizontal frame members 26 "and 2'1 andextends' upivardly through the cover II where a hand crank; 53 isfi nounted on the An annular dial 99 mounted onf'the cover concen ric 'with the crank shaft 30 is'divided by graduations .intofourteen equal parts and-numbered accord- 4 ingly to indicate the fourteen speeds or operating positions for the transmission. A pin I00 extending through aligned apertures in the hand crank 98 and the crank shaft 95 has a pointed end l0! to register with any of the indications I02 on the dial 99.

.Qonsidering now the operation of:v the speed changing transmissions, let it be assumed that the input shaft I1 is driven constantly at a given speed. Itis possible in the present embodiment of the invention to drive the output shafts |8 at any one of fourteen known speeds slower than the speed of the input shaft l7. If the operator moves the hand crank 98 counterclockwise, until the pointer registers With the first indication I02, the selector 86 will be moved until the notch 85 in the first selector element atthe bottom of the selector is positioned to allow the connecting unit 6| to move into operative connection with the gear 44 of the unit 3|. The spring 88 backing the connecting unit ll forces the intermediate gear fof this unit into engagement with the gear of the unit 3|, thus forming a positive driving connection between the input shaft i1 and the output shaft l8. This driving connection maybe traced from the input shaft I! through the worm 2|, worm gear 22, shaft 23, pinion 48, gear 44 of unit 3|, gears wand 80 of the connecting unit 6|, shaft 57 and beveled gears 55 and 53 to the output shaft l8. This driving connection is maintained until it is desirable to drive the output shaft at a different speed at which time the selected speed will be determined and'the hand crank moved until the pointer Ii)! registers with the desired indication on the dial as. This change in speedmay take place during the continued operation of the input shaft l1. I

It will be noted that duringone complete rotation of the crankshaft 90, the selector 86 will be rotated one revolution to successively position the recesses of their elements 8'! into registration with the connecting elements 5| to M, respectively, thus successively selecting the dimensioning speeds of the gear and pinion unit 3| to 43, inclusive, and to gradually decrease the speed of rotation of the output shaft I8 from its fastest speed when connected with the unit 3| to its slowest speed when connected to the unit 50. :These driving connections are so arranged through the control of the selector 36 that during its rotation, to change from one driving con- 'nection to another, the connecting unit vvh ich has been in operative position, is moved outof operative position or disconnected from the train of gears, prior to the movement of the. next connecting unitinto operative position. 'iFlurthermore, with the present arrangement, the shafts 51 and 58 are alternately utilized in thatthe connecting units are divided into two groups similar to the arrangement of their respective gear and pinion units.

It is to be understood that the above described arrangements are simply illustrative of the,ap- "plication of the principles of the invention. Nu-

merous other arrangements may be readily devised by those skilled in the art wliichiwi ll embodythe principles of the inventionandfall within the spirit and scope thereof.

What is claimed is: v

.1. A speed changing transmission comprising an input shaft rotatable 'at a given 'speed,.a. ro-

tatable shaft, vmeans.operatively connecting the rotatable shaft with the input shaft to be driven at a constant knownspeed thereby, a fixed position shaft mounted parallel'with the rotatable shaft, gear and pinion units mounted for free rotation upon the parallel rotatable and fixed position shafts and interconnected whereby the gear of the first unit on one of the parallel shafts will, when rotated, cause its pinion to rotate the gear of the companion unit of the other parallel shaft and so on throughout the length of the intermeshing train of gears and pinions to' and including the last unit, a pinion fixedly mounted for rotation with the rotatable shaft to drive the gear of the first unit to cause rotation of the units at varying speeds, an output shaft, intermediate shafts operatively connected to the output shaft, series of connecting units supported by their respective intermediate shafts for singly operatively connecting their respective gear and pinion units and intermediateshaf ts, and a drumlike selector to normally hold the connecting units out of connection with their gear and pinion units and having out-of-aligned recesses to effect selective movement of the connecting units into engagement with their gear and pinion units.

2. A speed changing transmission comprising an input shaft rotatable at a given speed, a rotatable shaft, means operatively connecting the rotatable shaft with the input shaft to be driven at a constant known speed thereby, a fixed position shaft mounted parallel with the rotatable shaft, gear and pinion units mounted for free rotation upon the parallel rotatable and fixed position shafts and interconnected whereb the gear of the first unit on one of the parallel shafts Will, when rotated, cause its pinion to rotate the. gear of the companion unit of the other parallel shaft and so on throughout the length of the intermeshing train of gears and pinions to and including the last unit, a pinion fixedly mounted for rotation with the rotatable shaft to drive the gear of the first unit to cause rotation of the units at varying speeds, an output shaft, intermediate shafts operatively connected to the output shaft, series of connecting units supported by their respective intermediate shafts for singly operatively connecting their respective gear and pinion units and intermediate shafts, each connecting unit including a fixed gear mounted on its intermediate shaft, an intermediate gear interconnected with the fixed gear, an arm to support the intermediate gear mounted for movement relative to its intermediate shaft and having a projection adjacent its outer end, means normally urging each arm toward its gear and pinion unit, and a drum-like selector to normally hold the connecting units unoperated and having out-of-aligned recesses to singly receive the projections during rotation of the selector whereby any of the connecting units may effect connection between the input and output shafts to cause the output shaft to be driven at known variable speeds.

NORMAN C. MOORE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 296,491 West Apr. 8', 1894 829,068 Fox Aug. 21, 1906 872,952 Markgraf Dec. 3, 1907 2,311,031 De Lancey Feb. 16, 1943 2,377,305 Bickel Jun 5, 1945 FOREIGN PATENTS Number Country Date 334,216 France Dec. 15, 1903 887,628 France Nov. '18, 1943 

